Threat Level: green Handler on Duty: Brad Duncan

SANS ISC: HTTP Header Usage Statistics HTTP Header Usage Statistics


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This is a continuation of work started by Brough Davis as part of his software security project for his Masters in Information Security Engineering. The main goal of this project is to find how many sites use security relevant headers, like for example the X-XSS-Protection or X-Frame-Options headers.

Below you will find a table/histogram showing how many times we found each header (security relevant or not). We access the index page of each site using a "head" request. The list of sites is derived from Alexa's Top 1 Million sites. We try to poll as many sites as possible each day.

As we collect more data, we will plot changes over time.



All Headers Active In The Past Month
Header Popularity
Set-Cookie
Content-Type
Date
Connection
Server
Cache-Control
Vary
Expires
X-Frame-Options
Content-Length
Strict-Transport-Security
X-Content-Type-Options
Link
Last-Modified
Cf-Request-Id
CF-Cache-Status
ETag
Accept-Ranges
X-XSS-Protection
Expect-CT
Pragma
X-Powered-By
X-Cache
CF-RAY
Via
Age
Content-Security-Policy
Report-To
NEL
Access-Control-Allow-Origin
Referrer-Policy
Content-Language
X-Amz-Cf-Pop
X-Amz-Cf-Id
X-Cache-Hits
P3P
X-UA-Compatible
X-Served-By
CF-Ray
X-Xss-Protection
X-Download-Options
X-Timer
Access-Control-Allow-Headers
Access-Control-Allow-Methods
X-Varnish
X-Adblock-Key
X-Request-Id
Access-Control-Allow-Credentials
X-FRAME-OPTIONS
X-Permitted-Cross-Domain-Policies
X-Request-ID
X-AspNet-Version
Alt-Svc
X-Runtime
Content-Security-Policy-Report-Only
X-Drupal-Cache
X-DNS-Prefetch-Control
X-Check
X-Generator
X-Cache-Status
X-Cacheable
Timing-Allow-Origin
X-Envoy-Upstream-Service-Time
X-Iinfo
X-Content-Security-Policy
X-Drupal-Dynamic-Cache
Feature-Policy
Content-Encoding
Access-Control-Expose-Headers
Upgrade
Status
X-CDN
X-AspNetMvc-Version
Access-Control-Max-Age
X-Via
X-UA-Device
Server-Timing
Request-Context
X-Robots-Tag
X-Turbo-Charged-By
X-Amz-Request-Id
X-Cache-Group
X-Amz-Id-2
EagleId
X-Backend
X-AH-Environment
P3p
X-Proxy-Cache
X-Dns-Prefetch-Control
Keep-Alive
X-Server
X-Ws-Request-Id
X-Age
Cf-Edge-Cache
Host-Header
X-Hacker
X-Vhost
X-Server-Powered-By
X-Rq
X-Varnish-Cache
X-Dispatcher
X-Amz-Version-Id
Grace
Allow
X-Swift-CacheTime
X-Swift-SaveTime
Ali-Swift-Global-Savetime
X-OneAgent-JS-Injection
X-LiteSpeed-Cache
X-Ua-Compatible
X-Page-Speed
X-Styx-Req-Id
X-Pantheon-Styx-Hostname
X-WebKit-CSP
X-Device
Cf-Apo-Via
Cf-Railgun
Accept-CH
X-Aws-Lambda-Call-Status
X-Node
X-Pingback
X-Host
X-Ruxit-JS-Agent
EagleEye-TraceId
X-Server-Id
X-Nginx-Cache-Status
Surrogate-Control
X-Akam-SW-Version
X-Readtime
Request-Id
X-Backend-Server
X-Cache-Spec
X-Content-Security-Policy-Report-Only
X-Cache-Lookup
X-HW
X-EdgeConnect-Origin-MEX-Latency
X-EdgeConnect-MidMile-RTT
Accept-Ch-Lifetime
X-Cloud-Trace-Context
X-Trace
X-Application-Context
X-Response-Time
Permissions-Policy
X-Nginx-Upstream-Cache-Status
Fastly-Restarts
X-Litespeed-Cache
X-Edge
X-Mod-Pagespeed
X-WebKit-CSP-Report-Only
Accept-CH-Lifetime
X-Country
Content-Location
X-Mcache
X-Content-Type
X-MS-InvokeApp
X-Url
X-Clacks-Overhead
X-PC
X-CST
X-Vname
X-TtlSet
X-Amz-Server-Side-Encryption
X-Midtier
Rating
RTSS
Cache-Tag
X-ESI
X-Vcap-Request-Id
X-D2id
X-Element-Page-Cache
X-Rack-Cache
Origin-Trial
X-GoogleNews-Bot
X-Kinja-Build
X-Use-Magma
X-Kinja-Revision
X-Exp-Variant
X-Kinja
X-Kinja-Server
X-Exp-Id
X-Cdn-Fetch
Verso
X-VARITI-CCR
X-Server-Name
X-Ac
X-Powered-By-Plesk
Service-Worker-Allowed
X-Ttl
X-Cnection
X-ECACHE
X-Amz-Rid
SPRequestGuid
X-SharePointHealthScore
X-GitHub-Request-Id
X-Navigation-Version
X-Client-IP
Xkey
X-Abt-Application-Version
Edge-Control
SPRequestDuration
SPIisLatency
X-Cache-TTL
X-Upstream
Arr-Disable-Session-Affinity
X-B3-TraceId
X-Cached
X-Mg-S
X-Dw-Request-Base-Id
X-Erf-Bev-Bev
X-Kraken-Loop-Name
X-Server-Lifecycle-Phase
X-Instrumentation
X-Browser-Type
X-Erf-Bev-Bev-Is-Generated
X-NWS-LOG-UUID
X-Varnish-TTL
X-Px
X-FastCGI-Cache
X-Middleton-Display
X-Sol
Display
Pagespeed
X-Cache-Key
X-SRCache-Store-Status
X-SRCache-Fetch-Status
X-NF-Request-ID
Access-Control-Request-Method
X-Forwarded-For
Edge-Cache-Tag
X-Country-Code
X-Correlation-Id
X-Goog-Hash
X-Webkit-Csp
TCN
X-Id
X-Powered-CMS
Content-MD5
X-Ser
Front-End-Https
AR-ATIME
AR-PoweredBy
AR-CACHE
AR-Request-ID
AR-SID
Public-Key-Pins
X-RateLimit-Remaining
X-Version
Accept-Ch
X-HP-Webp
X-Jurisdiction
X-HP-Trace-Id
X-MSEdge-Ref
X-Recruiting
X-Amzn-Trace-Id
X-Content-Digest
X-T
X-Ratelimit-Limit
X-Middleton-Response
Response
X-Accel-Expires
TP-L2-Cache
TP-Cache
MicrosoftSharePointTeamServices
X-Shield-Request-Id
X-XRDS-Location
S
Nginx-Cache
Cache-Status
X-Daa-Tunnel
Server-Node
X-Request-Processing-Time
X-Request-Received
MRF-Tech
X-HS-Combine-CSS
X-HS-Content-Id
X-HS-Hub-Id
X-HS-Cache-Config
X-B3-TraceId-Primal
Cache-Tags
Mrf-Cache-Status
Cross-Origin-Opener-Policy
X-Fastcgi-Cache
X-Distributor
X-Hits
X-TEC-API-ORIGIN
X-TEC-API-ROOT
X-TEC-API-VERSION
X-LB-Cache
X-Kinsta-Cache
X-Edge-Location-Klb
X-Origin-Server
X-Ratelimit-Remaining
X-Ezoic-Cdn
X-Ua-Browser
X-PressLabs-Stats
X-Fastly-Request-ID
Fastcgi-Cache
Alternate-Protocol
Filterid
X-Grace
X-Ratelimit-Reset
X-Hostname
X-Frontend
X-LLID
X-Request-Handler-Origin-Region
X-ORACLE-DMS-RID
X-Microsite
X-ORACLE-DMS-ECID
Server-Name
X-Geo-Country
X-Rid
X-DIS-Request-ID
X-Logged-In
X-FB-Debug
Healthy
X-Git-Hash
X-Varnish-Backend
X-Www-Served-By
Payment
X-Debug-Info
X-NGENIX-Cache
Cleartype
Realpath
X-Page-Id
X-Protected-By
X-Cluster-Name
X-Load-Cache
DC
X-Forwarded-Proto
X-ASPNET-VERSION
MS-Author-Via
X-ECache
X-DataDome
Content-Disposition
Access-Control-Allow-Method
X-Origin-Cache
Charset
X-B3-Sampled
X-GUploader-UploadID
X-Goog-Metageneration
X-Upgrade-Enabled
X-Server-ID
X-Kong-Proxy-Latency
X-Kong-Upstream-Latency
X-Proxy
X-Az
X-Activity-Id
X-AppVersion
X-Seen-By
X-F-Cache
X-Cache-Age
Count-Hit
X-Amz-Meta-S3cmd-Attrs
X-Amz-Replication-Status
X-B3-Traceid
X-Whom
X-Azure-Ref
X-Fb-Rlafr
X-TTL
X-Times
Paypal-Debug-Id
Cross-Origin-Resource-Policy
X-B
X-Revision
X-Type
X-Contextid
Surrogate-Key
X-Akamai-Edgescape
X-Request-Guid
X-Providence-Cookie
X-Route-Name
X-App-Environment
Viewport
Accept-Charset
X-Is-Crawler
X-Aspnetmvc-Version
X-Flags
X-Aspnet-Duration-Ms
Retry-After
X-TT
X-Wix-Request-Id
X-Hosted-By
X-Varnish-Server
X-B-Cache
X-Signature
X-Language
X-DynaTrace
Amp-Access-Control-Allow-Source-Origin
X-Cache-Control
X-Oracle-Dms-Ecid
X-Source
X-Envoy-Decorator-Operation
X-Oracle-Dms-Rid
X-App-Server
X-Mobile
X-Magnolia-Registration
X-Varnish-Grace
X-Goog-Storage-Class
X-Goog-Stored-Content-Length
X-Goog-Stored-Content-Encoding
X-Goog-Generation
X-VCache
Host
Version
WPO-Cache-Message
WPO-Cache-Status
Referer-Policy
X-Fastly-Request-Id
X-Cache-Rule
X-N
X-HTML-Minification-Powered-By
Refresh
X-Original-Request-Id
X-Tumblr-Pixel-1
X-Tumblr-Pixel-0
X-Tumblr-Pixel
X-Tumblr-User
X-Varnish-Age
Access-Control-Request-Headers
X-Cache-Time
X-Response-Served-From
X-EdgeConnect-Cache-Status
X-Cache-Status-Check
X-Varnish-Ttl
X-Amzn-RequestId
X-Amz-Apigw-Id
X-Rule
X-Content-Powered-By
Protected
SD-X-WS
VIX-Pulpo-Node
CDN-RequestId
X-User-Agent
X-Cache-Grace
X-Cacheable-TTL
X-UUID
X-Jobs
X-RTag
Ms-Operation-Id
X-G
MS-CV
X-Framework
VIX-Pulpo-Upstream-Status
GEO-INFO
X-Backend-Name
X-L-Path
X-RemovedCookies
Section-Io-Cache
X-ProcessESI
X-FW-Type
X-FW-Dynamic
From-Origin
X-Device-Type
X-FW-Version
X-FW-Hash
X-Environment-Context
X-FW-Static
X-FW-Server
X-FW-Serve
Akamai-GRN
NGB
X-Trace-Id
X-Status
X-Instance
X-Page-View
X-Tt-Trace-Tag
X-Tt-Trace-Host
X-Is-Bot
X-NYM-Debug-Backend
X-Adobe-Loc
X-Rendered-As
X-Akamai-Request-ID2
X-Http-Reason
X-Drupal-Cache-Tags
X-Adobe-Content
X-Region
X-Drupal-Cache-Contexts
X-Cache-Expired-At
X-XRDS-LOCATION
X-RateLimit-Limit
X-Nginx-Cache
Front
Url
X-Servername
X-Unique-Id
SRV
Accept-Language
X-Template
Pinterest-Generated-By
X-Pinterest-Rid
X-CDN-Forward
Pinterest-Version
Liferay-Portal
X-Debug-IsPreview
X-Debug-IsConnected
X-Content-Options
Fastly-SWR
Backend
Fastly-SIE
X-Air-Hostname
X-Air-Trace-Id
X-Time
X-Cache-Hit
X-Newrelic-App-Data
X-Yottaa-Metrics
X-Air-Source
X-Yottaa-Optimizations
X-Zen-Fury
Country
X-DynaTrace-JS-Agent
X-Mode
Content-Secure-Policy
X-COUNTRY
X-Cache-Operation
X-Rocket-Nginx-Serving-Static
Node
X-Uri
Meta-Geo
X-Rewrite-Enabled
X-RN-RSRV
Filters
Onion-Location
Uber-Trace-Id
X-Cache-Server
X-Content-Age
X-Amzn-Remapped-Content-Length
Webserver
S-Rt
X-IPS-LoggedIn
X-Tumblr-Pixel-2
X-UPSTREAM-Address
X-Proxy-Cache-Info
X-Edge-Location
CF-IPCountry
X-Timing-Wait
X-Generation-Time
Selected-Fe
Azure-InstanceId
Azure-Version
Cache-Hits
Azure-SlotName
Azure-SiteName
Azure-RegionName
X-Proxy-Build
X-Tb
X-Web-Node
X-Locale
X-PHP-Backend
X-Tumblr-Pixel-3
X-Site-Version
X-Cache-Action
X-Sucuri-Cache
X-Cluster-Node
X-Sucuri-ID
X-BYPASS-REASON
X-Say-TTL
X-ProxyCache-Key
X-Real-IP
X-SayCDN-TTL
X-Skip-Cache
X-Server-W
X-Soup
X-Access
X-Section
X-ARC
X-Cms-Context
X-Varnish-Beresp-Grace
Cache-Name
X-Labrador-Cache-Channel
X-Say-Cacheable
X-Ms-Version
X-Origin-Date
X-Format
X-ProxyCache-Status
X-Proto
X-Via-Fastly
X-PHP-Host
X-Ms-Request-Id
X-Routing-Service
ServerID
ServedBy
TWC-Connection-Speed
Property-Id
X-Proxy-Cache-Status
TWC-Device-Class
DB-Nickname
X-Reqid
Cross-Origin-Window-Policy
X-Sql-Count
X-Extlb
X-Debug
X-Proxied
X-UA-Device-Type
X-R9-Blue-Green-Version
X-VC-Cache
X-Handled-By
X-Forwarded-Host
X-Zipkin-Id
X-Cache-Host
TWC-Privacy
TWC-Locale-Group
TWC-GeoIP-LatLong
X-Origin-Hint
Webcakes-App-Name
X-Sql-Duration-Ms
Webcakes-Region
TWC-GeoIP-Country
Webcakes-App-Version
WP-Super-Cache
Countrycode
X-VWS-Id
X-FB-TRIP-ID
Cache-Tv-Group
X-IPLB-Instance
X-SaId
X-AWS-Id
X-IPLB-Request-ID
X-LJ-Flow-ID
X-Optimistic-Header
X-LAGOON
X-JoinUs
X-Adobe-Source
X-Ruxit-Js-Agent
Web-Mar-Node
Apigw-Requestid
X-Cache-TTL-Remaining
X-Urbn-Context-Path
X-Ua
X-Urbn-Site-Id
X-Cluster
X-No-Session
Mn-Server-Ip
Locale
X-Detected-As
X-Node-Name
X-LSADC-Cache
Fastcgi-Useragent
X-GeoCode
X-GeoCountry
X-App-Version
X-WP-CF-Super-Cache
X-Xfnlog-Site
X-Tt-Logid
X-WP-CF-Super-Cache-Cache-Control
X-Director
Mime-Version
X-Oneagent-Js-Injection
Source
Upgrade-Insecure-Requests
X-Varnish-Hits
X-GEO
X-Buckets
CDN-RequestCountryCode
CDN-PullZone
CDN-Cache
CDN-CachedAt
X-Hl-Ver
X-Generated-By
Fastly-Drupal-HTML
CDN-EdgeStorageId
CDN-Uid
Frame-Options
X-Tec-Api-Root
X-TIME
X-Tec-Api-Origin
X-Tec-Api-Version
X-Mg-Request-UUID
X-Request-Time
X-FireWall-Port
X-Varnish-Cache-Hits
X-Api-Version
X-Redis-Cache
Load-Balancing
Xet-Cookie
X-TA-CDN-Provider
X-Origin-TTL
X-ServerID
X-Origin-CC
X-URL
X-Varnish-Hostname
X-Webkit-CSP-Report-Only
X-Loop
X-RM-Cache-TTL
X-Cache-Debug
X-Datadog-Trace-Id
X-Datadog-Sampled
X-Datadog-Parent-Id
X-SRV
CF-Cached-On
X-Datadog-Sampling-Priority
X-Tx-Id
X-Akamai-Transformed
X-Alternate-Cache-Key
X-ShopId
X-Storefront-Renderer-Rendered
X-Sorting-Hat-PodId
X-Sorting-Hat-ShopId
X-Shopify-Stage
X-ShardId
X-Pubstack
X-Served-From
X-Endurance-Cache-Level
X-Pass-Why
X-Storage
X-CSRF-Token
X-Newrelic-Synthetics
X-Request-Host
Server-Info
Xserver
X-Location
X-Service
X-Restarts
X-TNCMS
Rendered-Blocks
Release
Server-Host
X-Nyt-Route
X-Developer
Redirect-Candidate
X-Mobile-URL
X-Loc
X-Ec-Fail
X-Men
X-Mid
X-Destination
X-Level-Front-Cache
Surrogated-Key
X-Thinkindot-L3
Thinkindot-Control
X-Origin-Time
X-D
X-Thanos
X-Origin
DCR-Decision-By
T-Server
Origin
TDXMobile
Thinkindot-CacheControl
Thinkindot-CacheControl-Type
Sslversion
X-Ec-GeoHdr
Host-ID
Gannett-Cam-Experience-Id
Cache-Host
BehaviorPad-Version
Lang
Candidate-Md5Url
X-Hash
DSUID
DCR-Processing-Time-Ms
Edge-Cache
X-Generated-On
X-Gdpr
A
MD5-Digest
X-Epic-Correlation-Id
X-INCAP-ABP
Ngx.Var.Host
NM-Fastcgi-Cache
Odigeo-Trace-Id
X-Vdms-Version
X-Httpd
Memcached
X-Vdms-Path
X-External-Request-Id
Meta-Geo-Continent
X-SVT-ORM-VERSION
X-TIM-N
X-Rocket-Build-Number
X-B-Cookie
X-Rojux
X-Bc-Bl
X-BCube-Filmed-By
X-Application
X-Akamai-Device-Characteristics
X-A-Wwc
X-Processor
X-Aed
X-Correlation-ID
Xc-Version
X-S
X-We-Are-Hiring
X-S-Maxage
X-ScT
X-Cache-Info
X-Cache-NE
X-Sigma
X-Sigma-Backend
X-Bip
X-Cdn-Origin
X-S-Cookie
X-Cache-Date
X-Platform-Router
X-CMSURLCustom
X-SVT-ORM-RULES
X-A-Ccd
X-A-Dam
X-A-Dcw
X-Platform-Cluster
X-A-Dgt
X-Conf
X-CUA
X-Provided-By
WWW-Authenticate
X-Core-Mission
X-SRCache-Key
X-A
X-Platform-Processor
X-Sn-Servicetimems
X-WP-CF-Super-Cache-Active
HostName
X-Date
Is-Eu
We-Hiring
X-Gamma-Serve
X-CacheTTL
Gh-Request-Id
Vix-Hermes-Req-Id
Fastly-GeoIP-CountryCode
X-GeoIP
X-GeoIP-City
Tube-Get-Contents
Tube-Got-Results
X-Cache-Id
X-Cache-Bucket
Tube-Return
X-Dispatcher-Server
X-Fastly-Cache
X-Dispatcher-Number
X-DefElseHash
Req-Svc-Chain
X-BBC-Edge-Cache-Status
X-Esi-Check
X-Auto-Login
X-DefHash
X-Ad-Defer-Variation
X-Accel-Expires-Debug
Platform
Tube-Got-Eval
X-Fastly-Backend
Magicmarker
X-Ec-Custom-Error
Mail-Subject
X-Fetched-On
X-Gzip
X-Server-IP
X-Varnish-Beresp-Status
X-Varnish-CookieHashed-On
X-Varnishpool
Adler-Geo
AKAMAI
X-Platform
X-Worker
X-VServer
X-Vmg-Version
X-Human
X-Test
Section-Io-Origin-Time-Seconds
Section-Io-Origin-Status
X-Varnish-Remaining-TTL
X-Slack-Backend
X-JWT-State
X-Mvc-Supplant-Cachable
X-Varnish-CookieINHashed-On
Section-Origin-Responded
X-Is-Gdpr
X-Scale
X-Varnish-Beresp-Ttl
X-Node-Id
CloudFront-Viewer-Country
Click-Count-Error
Click-Count-Action-Start
X-SD-PageType
X-Variation
X-Org
X-Req
Country-Code
Cmstype
Cmsid
X-Var-Ttl
X-Slack-Shared-Secret-Outcome
X-Response-By
Cache-Key
C-Via
X-NodeID
X-Pool
X-Origin-Response-Time
X-Has-Esi
X-Region-Sid
CacheControlHeader
X-Origin-Expires
Section-Io-Id
Environment
X-Parent-Response-Time
X-V-Cache
X-Qloud-Router
X-Release
X-Air-Pt
X-Request-Start
X-App
X-Clara-WADP
X-Ckpd-Fst-Backend
X-Owner
X-Planisys-CDN-TTL
Web-Mar-Region
X-Planisys-CDN-Rules
X-Core-Value
X-VG-TLSProxy
X-Planisys-CDN-Cache
Expect-Staple
X-Accel-Buffering
X-Wix-Viewer-Type
Kp-EeAlive
Apple-News-Services-Request-Url
X-Fmm-Version
X-FC-Vary-Parameters
Apple-News-Services-Parsed-Url
Machine
Apple-News-Services-Handled
Apple-News-Services-Host
X-Forwarded-Site
X-WADP-Cache
X-Geo-Header
X-GeoIP-Region-Code
Datacenter
Fastly-Backend-Name
X-WA-Info
X-Frame-Option
Canary
X-HS-Content-Campaign-Id
X-Instance-Name
X-Developers
X-Device-Os
X-Nginx-Cache-Key
X-GeoIP-Country-Code
X-Cache-Tags
Ssr
X-Cdn-Srv
X-Azure-Ref-OriginShield
Producers
On-Server
X-Irp-Debug
X-Cache-FS-Status
Origin-CC
Origin-EX
X-Mly-Id
X-DPWN-IS-SECURE
State
X-Vcl-Version
X-Via-CDN
X-Minions-Version
X-VarnishDD-TTL
X-Hnp-Log
X-Gen-Mode
X-HN
X-NCache
X-Old-Content-Length
X-SB
Srvid
X-FL-EDGE
X-Platform-Server
X-Op-Id-All
X-FL-QIT-DEBUG
Locid
X-Aicache-OS
Wxu-Next-Commit
Wxu-Next-Hostname
Wxu-Next-Region
Server-Ext
User-Cache-Control
Sever-Int
Server-Hostname
PFcat
NGX
Cache-Provider
Fastly-SSL
X-Block-Status
L
X-CACHE-AGE
Edge-Copy-Time
X-Via-SSL
X-Via-Edge
X-VC
X-Zone
X-CGP
X-Mvc-Supplant-OutputCached
X-Eu-Site
X-Nananana
L5d-Success-Class
X-LB-NoCache
CDCHOST
Ha-Gx-Prefs
HA-Ipaddr
X-From
X-Microcachable
X-B3-Spanid
X-Csrf-Jwt
X-Cache-Remote
X-Cache-Enabled
X-DC
Env
X-Up
X-Cache-Backend
X-Tb-Optimization-Total-Bytes-Saved
X-Lambda-Id
Cluster
Decoy-Debug-Key
Decoy-Debug-Status
Pics-Label
X-Generated-In
Decoy-Debug-TTL
X-Debug-Cache-Fetch
X-Refresh
X-Debug-Cache-Store
GeoIP-Latitude
X-RCS-CacheZone
X-ND-Cache
X-Trace-ID
X-Dc
X-Presslabs-Stats
X-Via-Poph
X-Via-Popv
X-NWS-UUID-VERIFY
X-VCT
X-Tid
X-Cached-By
X-Via-Popn
Cache
NtCoent-Length
X-Cs
SID
VNS-Cache
Time
X-Render-Time
X-Vtex-Remote-Cache
Memory
Sid
CPC-Age
CPC-Cache
X-HS-Status
VNS-Age
X-Webkit-CSP
X-B3-SpanId
X-Hcs-Proxy-Type
X-Edge-Pop
X-DataCenter
X-Servedbyhost
X-CCDN-Origin-Time
X-LB-ID
X-CCDN-CacheTTL
X-HA-Backend
X-Upstream-Ct
X-Upstream-Ht
X-Srv
X-TH-Server
Fastly-Drupal-Html
X-Wa
X-Esi
X-Vgn-Hpd-Cached
X-AIR-PT
X-Vgn-Hpd-Ssi
X-Vgn-Hpd-Variations-Key
Svr
X-Nc
AMP-Access-Control-Allow-Source-Origin
X-Cache-Type
Cdn
X-ATG-Version
X-NewRelic-App-Data
X-CLOUD-TRACE-CONTEXT
Server-ID
X-Client-Ip
X-Via-JSL
X-Varnish-Authentication
X-Cache-ASPX
X-ZONE
X-Contensis-Viewer-Groups
GeoIp-Country-Code
Srv
X-Fpc
Uri
X-Check-Cacheable
XkeyRZ
X-Vc
X-Proxy-CacheRZ
X-MP-GENERATED-AT
Esi-Enabled
X-Amz-Meta-Cb-Modifiedtime
X-CF-Lambda-Fn
X-CF-Lambda-Version
X-RateLimit-Remaining-Second
True-Client-IP
X-PAYTM-SRV-ID
X-RateLimit-Limit-Second
XServer
X-Nf-Request-Id
X-Gateway-Cache-Status
X-Varnish-Beresp-TTL
X-Gateway-Cache-Key
Cdncip
X-AK-Request-ID
M-TraceId
X-Gateway-Request-Id
X-Gateway-Skip-Cache
Cdnsip
X-EC-Lua
Hostname
X-NGINX-Cache
X-Udemy-Cache-App-Namespace
X-CS
X-Wikidot-Static-Cache
X-API-Version
Resin-Trace
True-Client-Ip
X-Wikidot-Backend
X-Via-NSCOPI
YJS-ID
X-CSRF-TOKEN
X-FPC
OT-Force-Account-Verify
X-CDN-Cache-Status
X-Bl-Debug
N-Cache
X-MSEdge-Flight
X-MSEdge-Features
Lb
X-Datadome
X-Orig-Expires
X-Tenant
X-Shop-Environment
RNT-Machine
X-Fastly-Country-Code
RNT-Time
X-Forwarded-Path
Eomportal-Instance
Request-ID
X-TX-ID
GeoIP-Country-Code
X-Policy
X-APP-VERSION
X-B3-Trace-ID
X-RateLimit-Reset
CDN
Server-Id
X-CACHE-KEY
X-Service-Response-Time
X-Micro-Cache
X-App-Name
Ngx-Var-Key
Path
Sm-Log-Id
X-Cache-Ttl
LB
X-SIPLIST1
IsBot
X-WA
X-Accel-Version
X-Vcache
X-Logging-Id
X-Request-URI
X-Edge-POP
X-VCL-Version
X-Lb-Id
Hit
X-MCACHE
X-Ha-Backend
X-NC
X-Cache-NGX
X-Container-Uri
HIT
X-Cdn-Diag
X-Cdn-Cache-Status
X-Info
X-Datacenter
Pramga
X-Git-Commit
X-ServedByHost
X-SERVER-NAME
Location
Cross-Origin-Opener-Policy-Report-Only
X-Github-Request-Id
X-Geo
X-Akamai-Pragma-Client-IP
Ohc-File-Size
X-Srcache-Fetch-Status
X-Snapshot-Date
X-Cdn-Forward
FSS-Cache
X-VG-WebCache
X-Srcache-Store-Status
Timeexpire
X-Tncms
X-Pod-Name
Yjs-Id
V-Age
Epwk-X-Cache
True-Client-Country-4JS
X-Via-PopH
X-Acquia-Purge-Cdn-Unconfigured
X-Via-PopV
Geoip-Latitude
ENV
X-Ctl-Mach
Req-ID
XM
X-Via-PopN
X-Wp-Cf-Super-Cache-Cache-Control
X-Iauth-Set-Uid
X-Wp-Cf-Super-Cache
X-Clientip
X-Amz-Meta-Opti
X-Lb-Nocache
X-Oss-Hash-Crc64ecma
X-Hyper-Cache
X-Oss-Request-Id
X-Oss-Object-Type
X-Cdn-Request-ID
X-TT-LOGID
Servername
Proxy-Connection
X-Fastly-Backend-Reqs
X-Dw-Trace-Id
X-Oss-Server-Time
CDN-RequestPullSuccess
X-Oss-Storage-Class
X-LiteSpeed-Cache-Control
X-Cache-Expires
X-Serial
CDN-RequestPullCode
X-M-Log
X-M-Reqid
Warning
X-Rebelmouse-Surrogate-Control
X-Rebelmouse-Cache-Control
X-Akamai-ERRuleID
X-Acquia-Purge-Tags
X-UP
X-Acquia-Application-UUID
X-RAMCache
X-Akamai-ERPolicy
X-Acquia-Site
Ec-Rule-Version
X-B3-Parentspanid
WZWS-RAY
Cneonction
X-Acquia-Application-Trace
Content-Script-Type
X-Qnm-Cache
Content-Style-Type
X-Swift-Error
CountryCode
X-UA
X-MiniProfiler-Ids
X-Lsadc-Cache
X-F-Status
Ohc-Cache-HIT
PICS-Label
W
X-Cached-Since
X-WP-CF-Super-Cache-Cookies-Bypass
X-Moov-T
X-Scheme
X-Moov-Xdn-Version
X-Mg-Cache
X-LiteSpeed-Tag
Ngx
X-Th-Server
X-Fastly-Cache-Hits
My-App
X-Webstats-RespID
X-IPS-Cached-Response
X-Litespeed-Cache-Control
X-Cache-Ngx
MIME-Version
X-B3-ParentSpanId